ANTHILLAsk your own question
Answer · confidence: partial

Why does Congo have so much cobalt and coltan, and are kids digging for them?

Research question: Why does the Congo supply so much of the world's cobalt and coltan, and how do artisanal miners, including children, fit into those supply chains?

The records show that the DRC's dominance in cobalt rests largely on geology: the Katanga copperbelt holds at least 72 economic copper and cobalt deposits 11, nearly all DRC cobalt comes from copper deposits 8, and some ore carries high cobalt grades 10. Estimates put the DRC at 67% to 76% of global cobalt production in 2024 3, with industrial mines producing about 80% of its cobalt and artisanal mining about 20% 7. Artisanal miners work largely at the low-paid, informal end of these chains: many depend on mining as their only income 5, much of the work is illegal and outside state regulation 4, and children work for low wages in unhealthy conditions 17. Artisanally mined cobalt enters supply chains serving large technology and automotive manufacturers, where child labour is reported 27, and miners are exploited by government, police, and traders 18. The facts do not address coltan directly; the only related item concerns US due diligence rules on tantalum and tungsten tied to conflict in the DRC 26. The newest supporting facts are from 2026 117.

Checked 2026-10-20. Only documented and supported facts are used.
Dig deeper on this question

Sources

[1] documented
The Democratic Republic of Congo generates 70% of the world's cobalt output, with artisanal and small-scale mining (ASM) operations accounting for 15-20% of that total.
"The DRC generates 70% of worldwide cobalt output, and ASM operations generate between 15% and 20% of this total amount."
Forecasting and Preventing Child Labor in Artisanal Cobalt Mining in the DRC: Challenges, Data Gaps, and AI-Driven Recommendations (2026)
[2] supported
The Democratic Republic of the Congo supplies over 60% of the world's cobalt, with mineral exports accounting for more than 95% of the country's export revenues.
"The DRC supplies over 60% of global cobalt, and mineral exports account for more than 95% of the country's export revenues."
Mining industry of the Democratic Republic of the Congo
[3] supported
In 2024, the DRC was estimated to account for between 67% and 76% of global cobalt production according to the IEA, USGS, and the Cobalt Institute.
"In 2024, the country was estimated to account for between 67% and 76% of global cobalt production, according to figures published by the International Energy Agency (IEA), the United States Geological Survey (USGS), and the Cobalt"
Mining industry of the Democratic Republic of the Congo
[4] supported
Artisanal mining in the DRC is often illegal because it operates outside state regulation, on company-owned land, or without official permits, which prevents the enforcement of labor and environmental protections.
"Artisanal mining is considered illegal since many sites operate outside of state regulation or formal labor laws. In the DRC miners often work on land that is owned by companies or in areas with a lack of official mining permits. This makes it hard to enforce labor protections or environmental protection policies, leading to the abuse of workers."
Mining industry of the Democratic Republic of the Congo
[5] supported
Many people in the Congo depend on mining as their only source of income, creating a cycle where illegal artisanal mines continue to operate despite the risks to workers' lives.
"Many people in the Congo depend on mining as their only form of income creating a cycle where these illegal, artisanal mines still run at the expense of these people's lives."
Mining industry of the Democratic Republic of the Congo
[6] supported
Children living near artisanal cobalt mining sites in Kolwezi show highly toxic exposure to cobalt and evidence of DNA damage.
"People living near artisanal cobalt mining sites in Kolwezi had significantly higher levels of cobalt in their blood and urine, with children showing highly toxic exposure and evidence of DNA damage."
Mining industry of the Democratic Republic of the Congo
[7] supported
The Democratic Republic of the Congo produces approximately 63% of the world's cobalt, with 80% coming from industrial mines and 20% from artisanal mining.
"The DRC produces about 63% of the world's cobalt, with about 80% from industrial copper mines, and the remaining 20% gathered by artisanal mining ."
Copper mining in the Democratic Republic of the Congo
[8] supported
Nearly all cobalt in the DRC is sourced from copper deposits, rather than being mined independently.
"Not all copper deposits contain significant cobalt , but nearly all cobalt in the country is sourced from copper deposits."
Copper mining in the Democratic Republic of the Congo
[9] supported
The DRC's copper belt contains some of the highest-grade copper deposits in the world, with grades above 5% in some reserves.
"The DRC copper belt includes some of the highest-grade copper deposits in the world. In some reserves the grades are above 5%."
Copper mining in the Democratic Republic of the Congo
[10] supported
The ore in the DRC copper belt holds high grades of cobalt and may contain 34% of the world's cobalt reserves.
"The ore also has high grades of cobalt and may hold 34% of the world's cobalt reserves."
Copper mining in the Democratic Republic of the Congo
[11] supported
The Katanga copperbelt is a geological formation approximately 70 kilometers wide and 250 kilometers long, containing at least 72 economic deposits of copper and cobalt.
"The Katanga, or Shaba, copperbelt in the DRC is a belt about 70 kilometres (43 mi) wide and 250 kilometres (160 mi) long between Lubumbashi and Kolwezi formed in rocks of the Katanga Supergroup . There are at least 72 economic deposits of copper/cobalt (estimated more than 200) and four large mining centers."
Copper mining in the Democratic Republic of the Congo
[12] documented
The Democratic Republic of Congo is the world's largest supplier of cobalt.
"the Democratic Republic of Congo, the world's largest supplier of cobalt, to formalize artisanal mining under the banner of responsible sourcing"
Cobalt mining and the corporate outsourcing of responsibility in the Democratic Republic of Congo (2021)
[13] documented
In the mid-1950s, the Union Minière du Haut-Katanga mining company operated in the mineral-rich province of Katanga, where it mined cobalt alongside copper and other metals.
"the colossal mining concern oper operating - ating operating in the mineral-rich province of Katanga. Such other minerals as copper, cobalt, tine, cadium, germanium, lead silver, and gold"
Image 8 of Jackson advocate (Jackson, Miss.), November 24, 1956
[14] supported
A cobalt mining boom in the DRC is driven by rising global demand for batteries and digital devices.
"There, a veritable mining boom for cobalt is underway, driven by rising global demand for batteries and other modern digital devices needed for future sustainability transitions."
When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining (2020)
[15] documented
Union Minière earned a profit of $126,000,000 in the year before publication from minerals including cobalt, before taxes, and taxes made up between one-third and one-half of the Congo's total tax revenue.
"netted Union Miniere a profit of $126,000,000 last year before deduction of taxes which comprise between one-third and one-half of the Congo’s total tax revenue."
Image 8 of Jackson advocate (Jackson, Miss.), November 24, 1956
[16] supported
Large-scale industrial mining operations rely on wageless artisanal workers, which has unintended effects on mining formalization.
"First, we suggest that the reliance on wageless artisanal workers in large-scale industrial operations holds important lessons for understanding the unintended effects of mining formalization."
Cobalt mining and the corporate outsourcing of responsibility in the Democratic Republic of Congo (2021)
[17] supported
Workers in DRC mining regions, including children, earn low wages and work in unhealthy conditions.
"The mining regions are also known to have dangerous working conditions where the workers including children, earn low wages and toil in unhealthy working conditions."
The Dark Side of the Energy Transition: A Pressure and Release Model Analysis of Artisanal Cobalt Mining in the Democratic Republic of Congo (2026)
[18] documented
Artisanal and small-scale miners are exploited by the government, police, and at times by traders or local communities.
"It documents the exploitation of ASM miners by the government, the police, and even at times other mining actors such as traders or local communities."
When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining (2020)
[19] supported
Belgian authorities regarded the Congo's strategic minerals as a bulwark against communism, which helped explain their approach to the colony.
"they hi ve for the moment made the Congo, with its strategic minerals, a firm bastion against communism."
Image 8 of Jackson advocate (Jackson, Miss.), November 24, 1956
[20] supported
Mining companies' flexible recruitment of artisanal workers is an emerging trend of corporate outsourcing of responsibility.
"Second, the flexible recruitment of artisanal workers by mining companies represents an emergent trend of corporate outsourcing of responsibility."
Cobalt mining and the corporate outsourcing of responsibility in the Democratic Republic of Congo (2021)
[21] supported
Cobalt mining in the DRC's Katanga region began around 1914, when Belgian firm Union Miniere found substantial copper ore deposits there, and the region soon became a major cobalt centre.
"Cobalt was initially found in 1914 in a Belgian firm Union Miniere after it found substantial deposits of copper ore in the southern area of the then Belgian governed state of the Congo Free State"
The Dark Side of the Energy Transition: A Pressure and Release Model Analysis of Artisanal Cobalt Mining in the Democratic Republic of Congo (2026)
[22] documented
Child labor and abuse in artisanal cobalt mining are sometimes carried out by the government or police, and at other times by families or mining communities themselves.
"It lastly reveals sobering patterns of child labor and abuse, again at times by the government or police, but other times by families or mining communities themselves."
When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining (2020)
[23] supported
Cobalt is usually produced as a by-product of other metal mining, which is one reason its supply is tied to other mining operations.
"Cobalt is usually by product of other metal mining processes often used globally"
The Dark Side of the Energy Transition: A Pressure and Release Model Analysis of Artisanal Cobalt Mining in the Democratic Republic of Congo (2026)
[24] documented
Most cobalt mining and processing takes place outside the United States.
"Most mining and processing of cobalt occurs outside the U.S."
Notice of Final Determination on 2023 DOE Critical Materials List (Energy Department, 2023-08-04)
[25] supported
Artisanal cobalt mining can at times amount to a modern form of slavery and a driver of social, economic, and regional dispossession.
"These factors can at times make cobalt mining a modern form of slavery and a catalyst for social, economic, and even regional dispossession."
When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining (2020)
[26] supported
Publicly traded U.S. companies, including DoD contractors and their subcontractors, must conduct supply chain due diligence on tantalum and tungsten when those minerals are necessary to a product's functionality or production, under a requirement meant to keep those minerals from supporting armed conflict in the Democratic Republic of Congo and adjoining countries.
"publicly traded U.S. companies, including DoD contractors and their subcontractors, already are required to conduct supply chain due diligence on these minerals when they are necessary to the functionality or production of a product manufactured by that company. This requirement stems from section 1502 of Public Law 111-203 (implemented at 17 CFR 240.13p-1) to ensure that such minerals are not sup"
Defense Federal Acquisition Regulation Supplement: Restriction on Certain Metal Products (DFARS Case 2021-D015) (Defense Department, Defense Acquisition Regulations System, 2023-04-27)
[27] supported
Artisanally mined cobalt from the DRC enters international supply chains that serve large technology and automotive manufacturers, where child labour and poor conditions are reported.
"the artisanally-mined cobalt to international chains supplying large-scale technology and automotive manufacturers."
The Dark Side of the Energy Transition: A Pressure and Release Model Analysis of Artisanal Cobalt Mining in the Democratic Republic of Congo (2026)
[28] documented
Vulnerabilities in artisanal cobalt mining, including sexual abuse and prostitution, fall disproportionately on women and girls.
"showing how many vulnerabilities—in terms of work, status, social norms, and sexual abuse and prostitution—fall disproportionately on women and girls."
When subterranean slavery supports sustainability transitions? power, patriarchy, and child labor in artisanal Congolese cobalt mining (2020)
[29] supported
Commenters argued that lithium iron phosphate and lithium iron-manganese-phosphate battery chemistries will reduce cobalt dependency for batteries.
"technology will reduce cobalt dependency for batteries."
Notice of Final Determination on 2023 DOE Critical Materials List (Energy Department, 2023-08-04)